Answer:
132 54Xe
Explanation:
From the question given above, the following were obtained:
Proton = 54
Neutron = 78
Atomic number =?
Atomic symbol =.?
Next, we shall determine the atomic number of the isotope. This can be obtained as follow:
Atomic number of an element is simply defined as the number of protons in the atom of the element.
Thus,
Atomic number = proton number
Proton = 54
Atomic number = proton number = 54
Atomic number = 54
Therefore, the atomic number of the isotope is 54
Next, we shall determine the mass number of the isotope. This can be obtained as follow:
Proton = 54
Neutron = 78
Mass number =.?
Mass number = Proton + Neutron
Mass number = 54 + 78
Mass number = 132
Therefore, the mass number of the isotope is 132.
From the calculations made above, the isotope have:
Atomic number = 54
Mass number = 132
Comparing the atomic number with those in the periodic table, the isotope is Xenon (Xe).
Thus, the atomic symbol for the isotope is 132 54Xe.
Atomic size generally decreases as you move from left to right across a period because as fast as it goes it will always be slower than generally the size.
Answer:
106.785 kPa, I believe this is correct!
Explanation:
Answer:
A , 210.3 g
Explanation:
Given data:
Number of moles of SiO₂ = 3.50 mol
Mass of SiO₂ = ?
Solution:
Formula:
Number of moles = mass/molar mass
Molar mass of SiO₂ = 60.08 g/mol
by putting values,
3.50 mol = mass/60.08 g/mol
Mass = 3.50 mol × 60.08 g/mol
Mass = 210.3 g
Answer:
Binding affinity measures the strength of the interaction between a molecule to its ligand; it is expressed in terms of the equilibrium dissociation constant; and the higher value of this constant, the more weaker the binding between the molecule and the ligand is. On the other hand, small constans means that the interaction is tight. So "C" binds most tightly to the enzyme and "D" binds least tightly.